Remove the Ubuntu folder lock flag

Remove the lock icon in the Ubuntu folder because the downloaded items are under the root permission, so there is a lock icon in the normal user, although it can be used in any operation under the root, it's okay to switch to the root account, but it looks awkward. How can I remove it? 1. Some netizens said that using sudo chmod-R 777 may be dangerous. This is not a nonsense. The permission for Recursive modification of files is readable, writable, and runable. Of course, there is no lock. However, this will change the permissions of the original file. 2. Copy it to a computer with windows ...... Well, of course, the permissions in linux will naturally disappear. 3. run the command to change the file Group user sudo chown. The file name of your username, for example, sudo chown jack common, turns out that this is okay, but it only changes the Group in the common folder, the files or folders inside are still locked. So sudo chown jack common/-R is required.